Strap attachment for wrist watchcases



A. BEUCKE STRAP ATTACHMENT FOR WRIST wA'rCHcAsEs June 1'7 i924.

Filed Das. 9, 1922 l INVENTOR .nngws E eudce ATTORNEYS f ill/f f Patented dune 17, `i924.

UNITED STATES `.AUGUST BEUCKE, OF` NEWARK, {.TERSIEXY,l ASSIGNOR TO THE KEYSTONE WATCH CASE COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

STRAP ATTACHMENT FORv WRIST WVATCHCASES.

Application filed December 9, 1922. Serial No. 605,937.

To all 'e0/wm t may concern.'

Be it known that I, AUGUST ,BnUoKna citizen of the United States, and a lresidentk A further object ris to provide a wrist watch case having removable bars, which bars may be inserted through permanently sewed loops at the ends of the strap or ribbon and easily attached' to the watch case, so that a ribbon or'strap may be attached to or detached from the wrist watch case without requiring that the sewing or stitching at the end or loop of the strap be severed wherein similar reference numerals desig or destroyed.

A further object is to accomplish the aforementioned endsin such manner that although the strap or ribbon may be readily attached to or disconnected from the watch case there willbe no danger or likelihood of the watch becoming accidentallykdetached from the strap or ribbon.

A further object is to provide a wrist watch case having removable bar hangers of simple design, one which may be readily and economically manufactured and of strong and rigidy construction throughout, and at the same time to provide a wrist watch case which is of simple and neat appearance and pleasing design.

Vith the foregoing and other objects in view, my invention consists in the improved wrist watch case illustrated in thev accompanying drawing and hereinafter described and claimed, and in such variations and modifications thereof as will be obvious to those skilled in the art to `which my invention relates, it being understood that changes maybe made within the scope of what is claimed without departing from thefspirit thereof. f

The preferred embodiment of my invention is disclosed in the accompanying draw- 1n g, wherein Figure 1 is a plan view of a wrist watch y case embodying the characteristic features ofgmy invention and illustrating a strap or ribbon secured thereto;

f Figure 2 is an enlarged sectional View taken on the line 2-2 of Figure l;

F lgure 3 is an enlarged detail view in perspective of the friction memberdnring `one stage of its manufacture;

Figure 4 isan enlarged sectional View of the completed friction member;

Figure L5 is anr enlarged View in section of a somewhat modified form of the remov able bar hanger; .f

perspective of the modified form of friction member; 1

l Figure 7 isa view 'in longitudinal section of the same;v and f f Figure 8 is an enlarged detail view in perspective of the bushing used in themodilied form of removable'bar hanger.`

t Referring speciicallyto the severalviews,

nate corresponding parts throughout, the wrist watch case 10 is provided upon opposite sides with the outstandingl arms 11 the action of spaced milling cutters so as to have formed therein the two spacedislots 15 extending entirely through vthe side walls of the tube and formingbetween said slots the strip 16. The strip 16m'is then subjected to an inwardly bending force so as to curve ror bend it inwardly as at 17 in Figure A and thereby partially restrict the portion 18-of the opening 20 which extends ythroughout the tube. p

The ends of the tubing are preferably chamfered or bevelled as yat 19, so as to aid in the passingV of the pin 13 through the opening 20, the latter being of such size as to snugly receive the pin therethrough.

As illustratedV in Figure 2, a sleeve 21,

Figure 6 is an enlarged detail View in preferably formed of or coated with precious metal, receives the friction member 14 therein, the opening within the sleeve and the external diameter of the friction member .being such that after the friction mem- 'ber has'once been pressed into place within the sleeve it will permanently remain so positioned. 4

The sleeve and friction'member thus constitute a bar B and are of such length as to t nicely between the 'confronting walls 22 of the supporting or hanger arms 11 of the case,

fn `'order to assemble the removable bar in fposition it Zis lplaced between the confronting arms 1l and the opening 2O of` the friction nieni'bei drawn into alignment with the openings 12 of the arms. y The steel `pin 13 is then forcibly pressedthrough the friction member, engages the inwardly bent strip 16, and forcesit outwardlyagainst the natural 'resiliency of this strip )and is their pressedA onwardly through the openin'fg 12 of the remote hanger arm. vThe pin 13 is Vof suoli vlength 'as to extend vfiush with the outer surfaces of the two arms when thus :pressed into position. rEhe outward forcingof the strip 16 provides for a considerab-le amount of friction between the removable bar B and the pin, causing the latter to remain in place but 'at the Vsaine time allowing it to bereadily removed when lso desired.

In Figures 5 to l8 VI 'have illustrated a Vsomewhat 'modified form of my invention wherein the 'removable bar C is formed of an outer 'sleeve 2,5 and in 'the end of one end fof which is forcibly pressed a bushing 26, the two 'endsj27 thereof being suitfably bevelled so 'as to'` facilitate/the 'pas- :sage ofthe "pin 28 itherethrough.

VAt tth'ejremote extremity of the'sleeve "isprovi'deda friction 'niemberi28, the same 4being, also 'formed of a short length of tubing V'having one end thereof reduced in diameter as at 29, and which reduced Vportion Vis provided with Aa longitudinally eX- 'tending"transverse slot '30, forming two resilient pro'ngs 3:1. The prongs 31, as illustrated in 'Figure 7, are then bent together so that the opening 32 which extends through the tube is restricted 0r narrowed fas tat V33 and Y'of rrelatively less size than the diameter of the pin 28. The ends of the 'frictionfinember 28 are also chainfeied or b'evelled as at 311, so that 'after it has been forcibly Lpressed into 4position at the vone'e'Xtremity Yof the sleeve the steel pin 28 may ,be readily inserted through ythe one end thereof. With the reniovable 'bar C as thus constructed'and placed between the confronting surfaces 35 of the hanger arms 36, the "pin 28 is forcibly passed through spreading the resilient prongs 33 apart and Y thenA through the remote .bushing 26 and into Ithe aligned opening 37 of the "remote arms. The Vprongs 33 forcibly grip the side walls of the pin 28 and thus prevent it :from

being accidenta lly shaken or jarred from Va frame o'r support is desired.

With the removable bar B as constructed in the 'preferred form or -as C in the'modi-V fied form, it may be 'readily passed vthrough a permanent loop `'24C at the ends of a strap or ribbon 23 and 'then positioned Vbetween the hanger Larms Aand the pin inserted in place, and, in 'like manner, when so de- "sired,a direct endpressure upon the steel pin will force it 'from the Vhanger bar and allow 'the latter'to be I'readily removed Vand the strap or ribbon to 'be Vthus disconnected froi'nthe wrist watchcase. p v l V'Having thus described 'and Yexplained my invention, I claim and'desire to secure by YLetters Patent Y stricting the said opening, anda pin extends ing through the 'openings in said `hanger arm and through 'the said bar 'and engaged lby said friction 'member and held -in position thereby. Y Y

V2. An article of the character described consisting of hanger arn'fisV haring aligned openings therein, l'a removable bar extend` ing vbetween said"hanger arms, having an axial opening extending therethrough "and aligning'with the openings in the arms, a friction member with 'an ,opening eXtend ing therethrough land 'with l'bevelle'd 'ends communicating Vwith said openings, saidv friction member having iportions thereof restricting the opening through said friction Vvmember, and a pin extending through the openings vin Athe Ihanger arms, through 'said friction member, and -fric'tionally held in place bythe latter.

3. An Aarticle of the character Vdescribed comprising hanger arms having aligned openings therein, a removable bar extending between said hanger arms and hgviiig 'an opening therethrough aligning Vwith ythe openings lin lthe hanger arms, "a frictionV member rigidly contained within said Ytube and including resilient prongs restricting Signed at Newark, in the county of Essex 10 the opening through said friction member, and State of New Jersey, this 5th day of and a pin free from obstructions or de- December A. D. 1922. K

pressions extending through the openings i in the hanger arms and frictionally en- AUGUST BEUCKE.

gaged by the prongs of the friction mem- Witnesses:

ber and held in place thereby and there- JOHN L. METZGAR,

by holding the removable bar between said J orLN J. MCGRATH. hanger arms. 

